macroinvertebrate


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macroinvertebrate

(măk′rō-ĭn-vûr′tə-brāt′)
n.
A macroscopic invertebrate, especially an aquatic organism such as a crustacean, a mollusk, or an aquatic insect.
References in periodicals archive ?
To characterize the macroinvertebrate community structure in each basaltic knickzone, we used non-metric multidimensional scaling (NMDS) derived from Bray-Curtis similarity matrices using square-root transformed density data (Clarke and Warwick, 2001).
Seasonal dynamics of benthic detritus and associated macroinvertebrate communities in a Neotropical stream.
The tolerance represents the capability of aquatic macroinvertebrate to survive under environmental degradation.
By and large, soils of lychee orchards and natural grassland were the richest and barren land and rice-wheat crop lands were the most poor land-use types regarding diversity and abundance of edaphic macroinvertebrate fauna.
In addition, some previous studies indicated that watersheds can sustain a certain amount of damage from impervious surfaces--a threshold--before damage to macroinvertebrate communities occurs.
Al-Shami, "Efficiency of different sampling tools for aquatic macroinvertebrate collections in malaysian streams," Tropical Life Sciences Research, vol.
National river monitoring using the SASS5 biotic index has indicated that macroinvertebrate communities in this river range from moderately to largely modified [16].
Recognizing that this was an opportunity, I designed nymphs to imitate the four macroinvertebrates I found were common in all the streams I surveyed: flat-headed mayfly (Heptageniidae), brushlegged mayfly (Isonychiidae), common netspinner caddisfly (Hydropsychidae) and finger-net caddisfly (Philopotamidae).
The potential for certain streams to exhibit significantly different, non-insectan communities, even in pristine or heavily forested watersheds, should be considered when using macroinvertebrate bioassessment to compare the organic and nutrient pollution among streams in this region.
We used a repeated measures analysis of variance test to determine if significant differences existed in macroinvertebrate taxa richness or biomass of ephemeral reaches of intermittent streams between the two watersheds on each of the first four days of succession.
Habitat preferences, water quality thresholds, and additional life-history traits have been described for nearly 4,000 North American lotic macroinvertebrate species making it possible to key in on the nature of ecological disturbance such as sedimentation, pollution, or increasing temperatures (Vieira et al.